Hyundai Elite i20 Owner's Manual page 183

H H ow vehicle audio works
FM reception
AM and FM radio signals are broad-
cast from transmitter towers located
around your city. They are intercepted
by the radio antenna on your vehicle.
This signal is then processed by the
radio and sent to your vehicle speak-
ers.
When a strong radio signal has
reached your vehicle, the precise
engineering of your audio system
ensures the best possible quality
reproduction. However, in some cases
the signal coming to your vehicle may
not be strong and clear.
This can be due to factors, such as
the distance from the radio station,
closeness of other strong radio sta-
tions or the presence of buildings,
bridges or other large obstructions in
the area.
JBM001
AM reception
AM broadcasts can be received at
greater distances than FM broad-
casts. This is because AM radio
waves are transmitted at low fre-
quencies. These long distance, low
frequency radio waves can follow the
curvature of the earth rather than
travelling straight. In addition, they
curve around obstructions resulting
in better signal coverage.
JBM002